Adding-machine



No. 609,885. Patented Aug. 30, |898. H. A. HERR.

ADDING MACHINE.

(Application led Jan. 12, 1893.)

(No Model.) 2 Sheds-Sheet 2.

@o0 ,aaa

#musical im.. slm. suo. no. $1. oogt. m.

.Y IM

H H ll Il H H Il ll {LLP /.9 OOGOOOG@ HHHIIHHHHIIH (QQ -o-ze`ch u n [j lo o o o Q o o o O 1 u H Il Il Il Hlw E Mojo o o o o o o o o Z. H H HM l unzllll WIOOOOOQOQQO jf@ VMWJWXGGOOOGGOOOO HIHHIIIII WL'QSeS nvenT-Ovt' www? wgffm UNITED STATES PATENT OFFICE.

IIOMER A. HERR, OF PHILADELPHIA, PENNSYLVANIA.

ADDING-MACHINE.

. SPECIFICATION forming part of Letters Patent No. 609,885, dated August 30, 1898.

Application filed JannarylZ, 1893. Serial No. 458,122. (No model.)

To a/ZZ whom t may concern:

Be it known that I, Honnr. A. HERR, a citizen of the United States of America, residing at Philadelphia, in the county of Philadelphia and` State of Pennsylvania, have invented certain new and useful Improvements in Adding- Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to an improved adding or auditing machine; and it consists of certain features fully set forth in the following` specification and accompanying drawings, forming part thereof.

The object of my invention is to provide a means for making an absolutely-correct total addition an d carrying from a lower to a higher column automatically or from units to tens, from tens to hundreds,from hundreds to thousands, rbc. By my device I have an exceedingly cheap machine to construct and a very eilicient one as well.

Similarletters and figures refer to like parts in the different views.

Figure 1 is a side elevation of the machine and a transverse section on the several supporting-shafts. Fig. 2 is a plan of the machine, the cover being removed. Fig. 3 is a perspective view of one of the registeringwheels. Fig. e is an end elevation and section on the dotted line s s of Figs. 2 and 5. Fig. 5 is a part plan view showing the racks on the sliding bars with the registering-wheels in position on the one side of the machine. Four of the sliding bars are shown as moved from their normal position and five as being in their normal position. Fig. 6 is one of the slides.

My machine belongs to that class of adding or auditing machines in which sliding bars operate on a bed-plate. Combined with the operating slides on the bed-plate is a series of registering-wheels, whereby on operating any one of the slides the registering-wheel corresponding thereto will be actuated, causing the proper amount to be registered thereon; secondly, a common lock whereby any one of the slides and all of them can be locked against movement during and at any period of a calculation; thirdly, means for automatically transferring a registration from a lower to a higher number automatically,as has been explained, thereby greatly facilitating a calculation on this class of machines.

1 is the bed-plate of the machine. This plate is provided with a series of longitudinal grooves. (See Fig. 4.) 2 are the sliding bars moving in the aforesaid grooves. These bars are provided with holes corresponding in position to the numerals on the raised portion P, between the said longitudinal grooves. This much of the machine is old.

To accomplish the purpose of my improvement, l provide a series of racks, one foreach of the aforesaid slides and secured thereto.

Mounted on a common shaft 4: are a series of registering-wheels. These wheels are provided on their periphery with a series of numerals from O to 9,consecutively. The raised portion P between the longitudinal grooves is likewise provided with a set of numerals from O to f 9,consecutively- The operationof this portion of the mechanism will be described more at length hereinafter.

17 is a locking-frame common to all the racks of the slides. The function of this frame is to engage with the teeth of the racks `and thereby arrest any further movement of the racks so engaged.

18 is a spring fixed to the case 15 by a screw or rivet. This spring engages with the locking-frame 17 and holds it out of the path ofthe racks normally.

1'6 is a screw. Vhen this screw is turned in the proper direction, it permits the spring to withdraw the frame 17 from its engagement with the teeth of the racks. When the screw is turned in the opposite direction, it forces the said frame into the teeth of the racks. This is best illustrated in Fig. 1.

9 is a common supporting-shaft for a series of compound bell-crank levers. 11, 8, and 10 form the arms of these compound levers,there being one bell-crank lever for each slide.

6 is a pawl pivoted to the arm 11 of the bellcrank lever. There is one of these pawls The IOO

guide 7 for the pawls 6 is secured to the standards 40 by screws, as shown in the plan view, Fig. 2.

12 is a rod secured to the standards 40 and limits the backward movement of the arm 11 of the bell-crank lever. To the arm 8 of this lever is secured the spring 13. There are a series of these springs, one for each lever. They are supported by a common rod 14. On consulting Fig. 1 it will be noticed that the paw] 6 is cam-shaped at the point 6a. By this means the said pawl is normally kept out of the path of the teeth of the registering-wheel which it intermittently actuates. The dotted position of the bell-crank lever and the actuating-pawl connected thereto in Fig. 1 indicate the position of these elements at the full limit of movement of its operating-rack and when it has transferred a registration from a one-cent to a ten-cent wheel or from units to tens or tens to hundreds, as the case may be.

The consecutively-numbered numerals in Fig. 1 tha/b is, nl, 412,79 :c3377 :442,7: 5,77 6, 7, 8, 9,&c.-indicate successive positions of a registering-slide. To illustrate: When the rst tooth of the rack has its center at the position indicated by the figure l, one unit of that racks value is registered on the adding-wheel which it operates. When this same point of the rack reaches any other of the positions indicated by these numerals, units of like value'are registered on the adding-wheel the respective slide may be operating. Now when the iirst tooth of any particular slide shall reach the position marked 9 it will come in contact with the arm 10 of the-bell-crank lever. A further movement of the slide will oscillate this arm 10, and the arms 8 and 11 being integral therewith the pawl 6 will drop into the space 63 of the registering-wheel 3, and thereby force the registering-wheel forward the distance equal to the pitch of one of its teeth, which will cause the amount to be registered thereon equivalent to the united movements of the slide, and thus transfer from units to tens, tens to hundreds, 85e., when the point representing the tenth multiple of the initial value of the operating-slide has been reached. When the operating-slide is returned to its normal position, the spring 13 will oscillate the arm 11 of this lever back against therod 12, and the cam GfL of the pawl 6 will raise the said pawl on the rod 5 and throw the point thereof out of the path of the teeth of the wheel it has just operated. The slides are returned to their normal position by inserting a stylus in the holes thereof and sliding them back to their original position. They are moved forward during the operation of registering in the same way.

30, Fig. 1, is a sheet-steel spring-plate fixe to the plate 17. It is in frictional contact with the teeth of the racks, and its function is to hold them in any successive position placed by the operation of the slides, thus avoiding` accidental movement of the slides. A pawl to hold the wheels in place would answer a similar purpose; but I prefer the frictional contact with the teeth of the racks. In practice it is found to be very efficient, and it reduces the cost of manufacture very materially.

40 40 are the two standards of the machine. They are held to the frame or bed-plate 1 by screws O 0. (Shown only in the plan Fig. 2.) The line s s in the plan Fig. 5 corresponds with the line s s, Fig. 2. This line is the line of the case 15. The position of this part of the case with respect to the holes of the slide is such that when the stylus or pencil is placed in any of the holes of any of the slides this edge of the casing will arrest the movement of the slide so operated by the aforesaid stylus striking the aforesaid edge of the case, and the amount it is desirous of adding to the total registry will thereby be correctly registered. Thus on Fig. 5 the slide on the onecent or unit column is moved forward the distance of three units in value, the ten-cent or tens slide is moved forward three units in value, the one dollar slide is moved two spaces or two units, and the ten-dollar slide is moved forward one space or one unit. I

therefore have a total registration of twelve dollars and thirty-three cents, as shown in both Figs. 4 and 5.

I do not limit myself to the mere specific details of construction, as I could modify them in various ways without departing from the spirit of my invention.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an adding-machine the combination of a grooved frame or bed-plate, a series of sliding bars provided with a rack at one end and a series of perforations at or near the other end thereof, a series of registeringwheels, a series of levers one for each of said racks excepting the rack of the highest order, a series of wheel-actuating pawls, one for each lever and carried thereby, and a common supporting-shaft for said wheels, where- IOO IIO

by on the operation of any of the sliding bars v the rack thereon will engage with the teeth of its corresponding registering-wheel and move .it to the proper degree to register the amount corresponding to the movement given the slide, and whereby units can be carried to tens, tens to hundreds, hundreds to thousands.

2. The combination in an adding-machine of a bed-plate or frame, a series of registering-wheels, acommon supporting-shaft therefor, a series of wheel-operating racks sliding on and supported by said bed-plate and a lock common to all of said racks, said lock consisting of a transverse-located pivoted frame, whereby the said racks can be locked against movement by said frame engaging with any of the teeth of all of the slides at any stage of a calculation.

The combination in an adding-machine of a bed-plate or frame, a series of register ing-wheels, a common supporting-shaft therefor, a series of wheel-operating racks, one rack for each wheel and a mechanical connection between each rack which operates the registering-wheel of a lower order, and the wheel of the next higher order, consisting of a pivoted lever adapted to be operated by said rack and a wheel-actuating pawl carried by said lever, substantially as described.

4f. The combination in an adding-machine of a frame having a series of grooves, a series of sliding bars, moving in said grooves, each bar of which is provided with a rack at one end and a series of holes at or near the other end thereof, a series of registering-wheels operated thereby, and a mechanical connection between each slide of a lower order and the registering-wheel of the next higher order, consisting of4 a pivoted lever adapted to be operated by its respective slide and a wheeloperating dog carried by said lever, with means for returning said levers to their normal position on being operated by their respective slides.

5. The combination in an adding-machine of a frame having a series of grooves, a series of sliding bars moving in said grooves, a series of registering-wheels, a supportin g-shaft for said wheels, and a connecting mechanism between the sliding bar operating the wheel of a lower order and the registering-wheel of the next higher order, consisting of a pivoted lever adapted to be operated by its respective rack and a wheel-operating dog or pawl carried by said lever, whereby the addition can be automatically carried from units to tens, from tens to hundreds, hundreds to thousands and so on.

6. The combination inl an adding-machine of a frame having a series of longitudinal grooves, a series of slides movable therein, a series of registering-wheels operated thereby and a lock common to all of said slides, said lock consisting of a transverse positioned pivoted frame and a hand -operating part without the case for operating said frame.

7. The combination in an adding-machine of a bed-plate or frame provided with a series of grooves, a series of numerals from O to 9, one series of numerals for each groove, a series of slides moving in said grooves, one slide for each groove, each slide being provided with a series of perforations corresponding in normal transverse position to the numerals on the bed -plate, a series of registeringwheels also provided with numerals from O to 9 and a mechanical connection between each slide of a lower order and the registering-wheel of the next higher order, consisting of a pivoted lever adapted to be operated by the slide and a wheel-operating dog carried by said lever whereby on operating any slide of the series, from the perforations corresponding in transverse position to any of the numerals on the bed-plate,to its predetermined limit, the value of the movement will be registered on the adding-wheel corresponding thereto.

S. The combination in an adding-machine of a grooved frame er bed-plate, a series of sliding bars movable in the grooves of said frame, a series of registering-wheels operated thereby, a connecting mechanism between the sliding bar operating a wheel of a lower order and the registering-wheel of the next higher order, consisting of a pivoted lever adapted to be operated by said slide and a wheel-operating pawl or dog carried by said lever, and means for normally'holding said pawl out of engagement with the wheel it operates, normally.

9. The combination in an adding-machine of a series of operating-slides, supported on a common frame, a series of registeringwheels operated thereby, a mechanical connection between the slide of a lower order and the registering-wheel of the next higher order, consisting of a pivoted lever adapted to be operated by the slide and a wheel-operating pawl or dog carried by said lever, and means for returning said wheeloperating pawl to its normal position on the operation of its corresponding slide.

In testimony whereof I aTix my signature, in presence of two witnesses, this 10th day of December, 1892.

HOMER A. HERR. lVitnesses:

J osHUA R. MORGAN, J. H. JENKINS. 

